Sewing machine



FIG. 1 is a front right top perspective view of a sewing machine showing our new design;

FIG. 2 is a view similar to FIG. 1 showing a display panel door of the sewing machine open;

FIG. 3 is a back right top perspective view of the sewing machine shown in FIG. 1;

FIG. 4 is a view similar to FIG. 3 showing the sewing machine with the display panel door open;

FIG. 5 is a left side elevational view of the sewing machine shown in FIG. 1;

FIG. 6 is a top plan view of the sewing machine shown in FIG. 1; and

FIG. 7 is a bottom plan view of the sewing machine shown in FIG. 1. 

The ornamental design for a sewing machine, as shown and described. 